You need to put in the 18 digit code in the early access website first, once you have done that. You should then get your 20 digit code from the early access website.
If you bought the digital version, please check back your email. You should have an email with instruction on where to redeem the 18 digit code.

If you are buying the retail package, the 20 digit code should be inside your retail pack, one of the leaflet inside the pack has the code.

I got 2 paper,

ff14 registration code
20 digit

and

square enix member product registration card
18 digit code  < -- this i dont know where to put

That one u can ignore it
Is just for u to put into squareenix member club
Sprt of like showing off games u bought from square enix

ahhhh .....
so no bonus then....
where they put the screen shot ?

cant find them

For this > square enix member product 18 character code registration card.
I actually went to the pre-order page, key in those and it converted to a valid pre-order bonus 20 digit code.

For this > square enix member product 18 character code registration card.
I actually went to the pre-order page, key in those and it converted to a valid pre-order bonus 20 digit code.

i cant.
i guess a hard copy version have no bonus,

but i dont really care,
i so impress by how good the game is,,
if only its fully voice..  i hate reading text 

D: wow really?

i cant.
i guess a hard copy version have no bonus,

but i dont really care,
i so impress by how good the game is,,
if only its fully voice..  i hate reading text 

it worth reading, because the translation is not your ordinary Quest Text translation. is full of depthness writing, is like a novel it self.

square enix member product registration card
18 digit code  < -- this i dont know where to put

i cant.
i guess a hard copy version have no bonus,

but i dont really care,
i so impress by how good the game is,,
if only its fully voice..  i hate reading text 

Should be under Mogstation now.
Square Enix Mogstation

I got 2 paper,

ff14 registration code
20 digit

and

square enix member product registration card
18 digit code  < -- this i dont know where to put

GOT IT ... I GOT TO CHANGE MY SE 18 DIGIT ACCOUNT HERE

http://preorder.eu.finalfantasyxiv.com/

IT WILL CONVERT IT TO PRE ORDER BONUS ACCOUNT

u can try register the 18-digit code at http://preorder.eu.finalfantasyxiv.com/.
it worked for my fren who bought a ps3 hard copy.

Edit: guess u have found the solution..

it confusing ... haiz
they even give me a link to redeem but only to mog station,,
search for uncle google and finnaly try it out and got it..

going back again 

see u guys later 
does this pree order bonus apply to all character ?
or just one

yes, it applies to all characters in the same service account. just check the mog delivery for new mails.